CN104015374B

CN104015374B - Method for producing frp cylinder and frp cylinder

Info

Publication number: CN104015374B
Application number: CN201410225187.5A
Authority: CN
Inventors: 中村崇人; 松本纪生; 木元尚纪
Original assignee: FUJIKURA RUBBER INDUSTRY Co Ltd
Current assignee: FUJIKURA RUBBER INDUSTRY Co Ltd
Priority date: 2009-01-21
Filing date: 2010-01-14
Publication date: 2017-04-12
Anticipated expiration: 2030-01-14
Also published as: TW201028340A; TWI507329B; WO2010084809A1; EP2390087A4; EP2390087B1; KR20110117077A; JPWO2010084809A1; US8883060B2; EP2390087A1; JP5662164B2; CN102292208B; CN104015374A; US20110281061A1; KR101639067B1; CN102292208A

Abstract

A method is provided for producing a weight-reduced FRP cylinder which can attain high strength, and also such an FRP cylinder is provided. This FRP cylinder producing method, in which a plurality of prepregs formed by impregnating reinforced fibers with thermosetting resin sheets are wound into a cylinder and thermally cured to be formed as a plurality of FRP layers, includes a simultaneous multilayer winding process in which a torsional rigidity retaining prepreg and a buckling prevention prepreg are continuously wound a plurality of turns with being layered on each other when the plurality of prepregs are wound into a cylinder, wherein the torsional rigidity retaining prepreg includes a layer of fibers oblique to a cylindrical axis direction of the FRP cylinder, and wherein the buckling prevention prepreg includes a layer of fibers orthogonal to the cylindrical axis direction.

Description

The method and FRP cylinders of manufacture FRP cylinders

The application is Application No. 201080005194.4, and the applying date is on January 14th, 2010, entitled " manufacture The divisional application of the Chinese patent application of the method and FRP cylinders of FRP cylinders ".

Technical field

The present invention relates to a kind of method of manufacture FPR cylinders, and it is related to a kind of FRP cylinders.

Background technology

In recent years, FRP (fibre reinforced plastics) cylinder is had been used in the middle of various industrial circles.As manufacture FRP cylinders Method, known method is filament wound method (patent document 1) and prepreg method (patent document 2) in the middle of this area, In filament wound method, carbon fiber is wrapped in around the heart axle while impregnated of resin, multiple in the middle of prepreg method Prepreg (each prepreg is made up of the carbon fiber impregnated of thermosetting resin piece) is wound and is thermally cured, to be formed Multiple FRP layers,.

Prior art literature

Patent document

Patent document 1：The Japanese uncensored patent of Publication No. No.2006-62355.

Patent document 2：The Japanese uncensored patent of Publication No. No.2001-96635.

The content of the invention

The present invention problem to be solved

However, needing the resin more than ormal weight, and the volume of carbon fiber according to the FRP cylinders of filament wound method manufacture Content has the upper limit, therefore there is a problem of fully meeting the demand that FRP cylinders weight reduces and intensity is improved.

On the other hand, it is according to the characteristic that has of FRP cylinders of prepreg method manufacture：Even if in minimum necessary amounts Also the volume content of carbon fiber can be increased under resin, so as to the weight that advantageously obtains FRP cylinders simultaneously mitigation and The raising of intensity.However, being used as the power transmission shaft of automobile (two wheeler) or drive in the FRP cylinders manufactured according to prepreg method In the case of moving axis, need the FRP cylinders that there is high level intensity (torsional rigidity, roll rigidity and fatigue strength etc.) to support Resist the power (moment of torsion) being applied on the direction for favouring FRP cylinders on the FRP cylinders and be orthogonal on the direction of FRP cylinders The power (flexing) being applied on the FRP cylinders, so as to be provided with improved space.

In view of the understanding to the problems referred to above, has been devised by the present invention, and it is an object of the invention to provide a kind of use Method to manufacture the FRP cylinders of weight saving, the FRP cylinders can reach very high intensity, and the purpose of the present invention is also It is that this FRP cylinders are provided.

The means of solve problem

As the result being analyzed to traditional FRP cylinders, present inventors have found that：By and large, pass The FRP cylinders of system be by multiple-turns wound is carried out to prepreg in mutually different machine direction and made by；However, working as Among the multiple fibers for abutting one another on the inner/outer direction of FRP cylinders on FRP cylinders when applying power, by In the multiple fibers (fibrage) abutted one another on the inner/outer direction of the FRP cylinders of the prepreg for abutting one another mutually It is isolated, therefore is difficult the power generation effect for causing to suppress the deformation of these fibers.Although additionally, same prepreg Base continuous winding multi-turn, but when the prepreg for having been wound up multi-turn has carried out heat cure when, it is difficult to make Inhibition generation effect in a similar manner must be deformed, this is because abutting one another on the inner/outer direction of FRP cylinders Machine direction it is mutually the same.Inventor is concluded that these are exactly why traditional FRP cylinders can not represent fully strong The reason for spending, so as to direct it towards the conception of the present invention.

Specifically, from following viewpoint designing the present invention：Mutually different by winding machine direction Multiple prepreg and made by the middle of FRP cylinders, the FRP cylinders always include that torsional rigidity keeps prepreg and anti-anti-bend The prepreg of bent (buckling), the torsional rigidity keeps prepreg to contain the increasing of the longitudinal direction for favouring FRP cylinders Strong fiber (inclined fiber), this prevents the prepreg of flexing from containing the reinforcing fiber of the longitudinal direction for being orthogonal to FRP cylinders (orthogonal fiber), therefore, if inclined fiber and orthogonal fiber are with the state continuous winding multi-turn that abuts one another, then can Make the multiple fibers (fibrage) for extending in one direction and extend in the other directions including other fibers (fibrage) The circle of stacking two or more multi-turn are adjacent on portion/outside direction.Therefore, interior fibrage and outer fibre layer prevent mutually it from deforming, from And intensity can be improved.In other words, if orthogonal fiber (inclined fiber) and inclined fiber (orthogonal fiber) be laminated and The circle of winding two or more multi-turn (to form simultaneously wound multilayer/many windings layer/mono- group winding layer), wherein orthogonal fiber (inclined fiber) is clipped between inclined fiber (orthogonal fiber), then can improve the intensity of FRP cylinders, this is because, Ke Yishe Expect, when outer masterpiece uses FRP cylinders, the fibrage for adjoining cooperate with each other ground resistance to deformation.

Method for manufacturing FRP cylinders of the invention is characterised by, multiple prepreg are wound up as into cylinder And carry out heat cure, to form multiple FRP layers, the prepreg by by reinforcing fiber impregnated of thermosetting resin piece shape Into, methods described includes the multi-lay winding process for carrying out simultaneously, wherein when the plurality of prepreg is wound up as cylinder, Torsional rigidity keeps prepreg and prevents the prepreg of flexing to be continuously wound multi-turn while stacking mutually, its Described in torsional rigidity keep prepreg include favour the FRP cylinders cylinder axis direction fibrage, and its In, it is described to prevent the prepreg of flexing from including being orthogonal to the fibrage in the cylinder axis direction.

By this configuration, the FRP cylinders of the high intensity relative to torsional direction and buckling direction are obtained in that, this is adapted to In the power transmission shaft as automobile and drive shaft.

Described while during the multi-lay winding for carrying out, the torsional rigidity keeps prepreg and described prevents flexing Prepreg prepreg is kept by bending stiffness and multi-turn has been continuously wound, the bending stiffness keeps prepreg Including the fibrage parallel to the cylinder axis direction, and the bending stiffness keeps prepreg to be further layered in the torsion Turn rigidity to keep in prepreg and the prepreg for preventing flexing.

By this configuration, to be obtained in that and there is intensity and relative to torsional direction and flexing side relative to bending direction To the FRP cylinders with intensity, and the FRP drum fits are in the stabiliser bar as automobile or anti-roll lever.

It is desirable that described while the multi-lay winding process for carrying out is performed at least twice.It is desirable that in winding contrary mutually To described while the multi-lay winding process for carrying out is performed at least twice on direction.

It is desirable that described while the multi-lay winding process for carrying out is using separate sheet (for example, PTFE films or PFA films) Carry out, the separate sheet is clipped between the prepreg adjoined under laminated arrangement that (torsional rigidity keeps prepreg and preventing The prepreg of flexing, torsional rigidity keep prepreg and bending stiffness to keep prepreg or prevent the preimpregnation of flexing Material base and bending stiffness keep prepreg), and during the operation of the multi-lay winding for the carrying out process simultaneously, by described point Remove from piece.

It is desirable that described while each the prepreg (torsional rigidity being wound during the multi-lay winding for carrying out Keep prepreg and prevent the prepreg of flexing, and bending stiffness keeps prepreg) all in the cylinder axis side There is upwards identical length, and on the cylinder axis direction, whole length of multiple prepreg in the FRP cylinders It is stacked mutually on degree.For the FRP cylinders with traditional structure, typically, will be used for preventing the cross section of FRP cylinders from bending The bent prepreg of flexing that prevents marginally is inserted in the middle of a part for FRP cylinders on cylinder axis direction, therefore, can Can occur such as this prevent the prepreg of flexing from cannot easily insert and product occur distort problem.In the present invention It is central, by being examined closely again to this conventional well known technology general knowledge, can pass through cause prevent flexing prepreg and Torsional rigidity keeps prepreg (bending stiffness holding prepreg) to have equal length on cylinder axis direction, and makes These prepreg continuous winding multi-turns, so as to solve such as this prevent the prepreg of flexing from cannot easily insert and There is the problem for distorting in product.

FRP cylinders of the invention are characterised by that the FRP cylinders have multiple prepreg, the prepreg By the way that reinforcing fiber is formed impregnated of thermosetting resin piece, and the prepreg is wound up as cylinder and has carried out thermosetting Change, to be formed as multiple FRP layers, wherein the plurality of FRP layers include simultaneously wound multilayer, the multilayer is by one group of prepreg Configuration is formed, and one group of prepreg continuous winding multi-turn is simultaneously thermally cured, wherein one group of prepreg includes mutual layer Folded torsional rigidity keeps prepreg and prevents the prepreg of flexing, wherein the torsional rigidity keeps prepreg to include The fibrage in the cylinder axis direction of the FRP cylinders, and the wherein described prepreg for preventing flexing are favoured including just Meet at the fibrage in the cylinder axis direction.

From for practice so that the torsional rigidity keeps prepreg to include a pair of biasing prepreg, and the biasing is pre- The filament fiber direction of leaching material base is with ± α degree (0<α<90) angle and favour the cylinder axis direction, and cause institute Stating prevents the prepreg of flexing from including hoop prepreg, and the filament fiber direction of the hoop prepreg is orthogonal to the circle Cylinder axis direction.In this case, it is desirable that it is the pair of biasing prepreg filament fiber direction with ± 30 degree, ± 45 degree or ± 60 degree of angle favours the cylinder axis direction.

One group of prepreg can also include that being layered in the torsional rigidity keeps prepreg and the anti-anti-bend Bending stiffness in bent prepreg keeps prepreg, and the bending stiffness keeps prepreg to have parallel to the cylinder The fibrage of axis direction.In this case, from for practice so that it is 0 degree of preimpregnation that the bending stiffness keeps prepreg Material base, the filament fiber of 0 degree of prepreg is oriented parallel to the cylinder axis direction.

Alternately, the torsional rigidity can be caused to keep prepreg to include that plain weave fabric prepreg, three axles are compiled Woven fabric prepreg or four axle braided fabric prepreg, wherein the plain weave fabric prepreg is by impregnated of thermosetting tree The plain weave fabric of fat piece is constituted, and the plain weave fabric prepreg includes favouring the fibrage in the cylinder axis direction, Wherein described three axles braided fabric prepreg is made up of the three axle braided fabrics impregnated of thermosetting resin piece, and the three axles braiding Fabric prepreg material base includes favouring the fibrage in the cylinder axis direction, and wherein described four axles braided fabric prepreg Base is made up of the four axle braided fabrics impregnated of thermosetting resin piece, and the four axles braided fabric prepreg is described including favouring The fibrage in cylinder axis direction.Additionally, the prepreg for preventing flexing can include plain weave fabric prepreg or Four axle braided fabric prepreg, wherein the plain weave fabric prepreg is by the plain weave fabric structure impregnated of thermosetting resin piece Into, and the plain weave fabric prepreg includes being orthogonal to the fibrage in the cylinder axis direction, and wherein described four axle Braided fabric prepreg is made up of the four axle braided fabrics impregnated of thermosetting resin piece, and the four axles braided fabric prepreg Including the fibrage for being orthogonal to the cylinder axis direction.

It is desirable that one group of prepreg continuous winding three enclose or more multi-turn and be wound up as cylinder.

It is desirable that the plurality of FRP layers include multilayer simultaneously wound described at least two.In this case, respectively At least two groups prepreg for forming the simultaneously wound multilayer are alternately wound with winding direction contrary mutually.

It is desirable that the plurality of FRP layers include the outermost layer for preventing explosion layer to be used as the FRP layers, this prevents the layer that bursts It is made up of hoop prepreg, the filament fiber direction of the hoop prepreg is orthogonal to the cylinder axis direction.

It is desirable that each prepreg of one group of prepreg (torsional rigidity keeps prepreg and prevents flexing Prepreg, and bending stiffness keep prepreg) on the cylinder axis direction have identical length, and On the cylinder axis direction, multiple prepreg of one group of prepreg are mutual in the whole length of the FRP cylinders It is mutually stacked.

Invention effect

According to the present invention, because methods described includes the multi-lay winding process while carrying out, wherein when multiple prepreg When being wound up as cylinder, torsional rigidity keeps prepreg and prevents the prepreg of flexing from being connected while stacking mutually Multi-turn is wound with continuously, wherein the torsional rigidity keeps prepreg to include favouring the cylinder axis side of the FRP cylinders To fibrage, it is and wherein, described to prevent the prepreg of flexing from including being orthogonal to the fibrage in the cylinder axis direction, It is obtained in that the FRP cylinders of the high intensity relative to torsional direction and buckling direction.Furthermore it is possible to realize the weight of FRP cylinders Mitigation is improved with intensity, this is because can pass through to reduce that the torsional rigidity for constituting one group of prepreg holding be included in advance Soak material base and prevent the amount of resin in the prepreg of flexing, so as to improve the amount of reinforcing fiber.

Description of the drawings

Fig. 1 is to show the multi-lay winding carried out while being included in FRP cylinders with regard to first embodiment of the invention The view of layer；

Fig. 2 is regarding for the structure of one group of prepreg of the multi-lay winding layer carried out while showing to include shown in Fig. 1 Figure；

Fig. 3 is the view of the structure for showing the prepreg for preventing bursting；

Fig. 4 is the view of the structure for showing FRP cylinders, and the FRP cylinders in cylinder mode by being wound up as the pre- of FRP layers Leaching material base carries out heat cure and makes；

The view of the multi-lay winding layer that Fig. 5 is carried out while being and show to be included in FRP cylinders, the FRP cylinders are by profit The plurality of layer is wound with the separate sheet being clipped between multiple layers and is made；

Fig. 6 is to show the multi-lay winding carried out while being included in FRP cylinders with regard to second embodiment of the invention The view of layer；

Fig. 7 is to show the multi-lay winding carried out while being included in FRP cylinders with regard to third embodiment of the invention The view of layer；

Fig. 8 is regarding for the structure of one group of prepreg of the multi-lay winding layer carried out while showing to include shown in Fig. 7 Figure；

Fig. 9 shows the multi-lay winding layer carried out while being included in FRP cylinders with regard to four embodiment of the invention View；

Figure 10 is regarding for the structure of one group of prepreg of the multi-lay winding layer carried out while showing to include shown in Fig. 9 Figure；

Figure 11 is shown in the case that the number of turns of one group of prepreg changes, while the multi-lay winding for carrying out The view of layer；

Figure 12 is to show the multi-lay winding carried out while being included in FRP cylinders with regard to fifth embodiment of the invention The view of layer；

Figure 13 is the structure of one group of prepreg of the multi-lay winding layer carried out while showing to include shown in Figure 12 View；

Figure 14 is to show the multi-lay winding carried out while being included in FRP cylinders with regard to sixth embodiment of the invention The view of layer；

Figure 15 is the structure of one group of prepreg of the multi-lay winding layer carried out while showing to include shown in Figure 14 View；

Figure 16 is the view of the structure for showing the plain weave fabric prepreg that prepreg is kept as torsional rigidity；

Figure 17 is the first of the structure for showing the three axle braided fabric prepreg that prepreg is kept as torsional rigidity View；

Figure 18 is the second of the structure for showing the three axle braided fabric prepreg that prepreg is kept as torsional rigidity View；

Figure 19 is to show the four axle braided fabrics for keeping prepreg as torsional rigidity or preventing the prepreg of flexing The view of the structure of prepreg；

Figure 20 is the view for showing the structure as the plain weave fabric for preventing flexing layer；

Figure 21 be for being displayed in the example of practice in, the prepreg in each the FRP cylinder manufactured for test Multi-lay winding structure the first chart；

Figure 22 be for being displayed in the example of practice in, the prepreg in each the FRP cylinder manufactured for test Multi-lay winding structure the second chart；

Figure 23 be for being displayed in the example of practice in, the prepreg in each the FRP cylinder manufactured for test Multi-lay winding structure the 3rd chart.

Specific embodiment

(the first embodiment)

Fig. 1 is to show winding while being included in FRP cylinders 100 (Fig. 4) with regard to first embodiment of the invention The view of multilayer 10.The FRP cylinders 100 are by the way that multiple prepreg are wound up as into cylinder and to multiple preimpregnation of such winding Material base carry out heat cure and made by, so as to constitute multiple FRP layers, wherein each prepreg is by by thermosetting resin piece Made by impregnated of reinforcing fiber.In FIG, it is only many to being included in this in order that the present invention is easier to understand The multilayer 10 wound while in individual FRP layers is shown.

The simultaneously wound multilayer 10 has torsional rigidity retaining layer 20 and prevents the layer 30 of flexing, and the torsional rigidity keeps Layer 20 has certain intensity come (hereinafter referred to as " cylinder axis the direction ") Jing on the axis direction for favouring FRP cylinders 100 It is described to prevent the layer 30 of flexing that there is certain intensity to be orthogonal to cylinder by the power (moment of torsion) being applied on FRP cylinders 100 Undergo the power (flexing) being applied on FRP cylinders 100 on axis direction.Torsional rigidity retaining layer 20 by a pair of bias layer 20A and 20B is constituted.

More specifically, simultaneously wound multilayer 10 is formed by one group of configuration of prepreg 1, one group of prepreg 1 is kept prepreg 2 by torsional rigidity and prevents the prepreg 3 of flexing to constitute, and torsional rigidity keeps the He of prepreg 2 Prevent the prepreg 3 of flexing as shown in Figure 2 according to being sequentially laminated from that of bottom (inner side), and one group Prepreg 1 continuous winding multi-turn is simultaneously thermally cured, and wherein torsional rigidity keeps prepreg 2 to include favouring cylinder axis The fibrage in direction, preventing the prepreg 3 of flexing includes being orthogonal to the fibrage in cylinder axis direction.Fig. 2 shows torsion Rigidity keeps prepreg 2 and prevents the state of one group of prepreg 1 before the mutual stacking of prepreg 3 of flexing, with right The torsional rigidity for constituting one group of prepreg 1 keeps prepreg 2 and prevents the fiber side of each of the prepreg 3 of flexing To being shown.It is noted that previous-next (interior-outer) position relationship between multiple prepreg is flexibility and changeability；Can pass through Prepreg 2 is kept sequentially to carry out layer according to from that of bottom (inner side) prepreg 3 and torsional rigidity that prevent flexing Fold to manufacture one group of prepreg 1.

Torsional rigidity keeps prepreg 2 to become torsional rigidity retaining layer 20 by heat cure；In the embodiment Central, torsional rigidity keeps prepreg 2 to be made up of a pair of biasing prepreg 2A and 2B.The filament of this pair of biasing prepreg Machine direction is with ± α degree (0<α<90) angle and favour cylinder axis direction.Angle [alpha] be, for example, ± 30 degree, ± 45 degree or ± 60 degree.The prepreg 3 for preventing flexing becomes to prevent the layer 30 of flexing by heat cure, and this prevents the prepreg of flexing Base 3 is hoop prepreg, and the filament fiber direction of the hoop prepreg is orthogonal to cylinder axis direction.

The width W settings of one group of prepreg 1 (torsional rigidity keeps prepreg 2 and prevents the prepreg 3 of flexing) To be wound around about three times of the girth of one group of prepreg 1 for cylinder, and one group of prepreg 1 being capable of continuous winding three Enclose and be wound up as cylinder.Because one group of prepreg 1 is made up of three prepreg：A pair of biasing prepreg 2A and 2B and Hoop prepreg 3, therefore cylinder is wound up as by the way that one group of continuous winding three of prepreg 1 is enclosed, the quantity of lamination is altogether It is changed into nine.One group of prepreg 1 (torsional rigidity keeps prepreg 2 and prevents the prepreg 3 of flexing) is in cylinder axis side There is upwards identical (equivalent) length, and on cylinder axis direction, torsional rigidity keeps prepreg 2 and anti-anti-bend Bent prepreg 3 is stacked mutually in the whole length of one group of prepreg 1.Notice that length L corresponds to FRP cylinders 100 Length, and length L is designed according to the purposes of FRP cylinders 100.

Various prepreg are wrapped in the inner side or outside of one group of prepreg 1 according to the purposes of FRP cylinders 100, And these various prepreg become the FRP layers different from simultaneously wound multilayer 10 by heat cure.For example, it is preferable Ground, the outermost layer of multiple FRP layers of FRP cylinders is constituted prevents the layer that bursts, and it is by preventing explosion that this prevents explosion layer Prepreg 7 (hoop prepreg) carry out heat cure and made by, the direction of its filament fiber is orthogonal to cylinder axis direction (Fig. 3).This prevents explosion layer from preventing FRP cylinders 100 to burst when compression is buckled, and enhances FRP cylinders 100 relative to buckling direction intensity.Prevent the width W ' of the prepreg 7 for bursting is carried out according to its number of turns (lamination quantity) Design.Further, it is also possible to bending stress retaining layer is installed on any a layer of multiple FRP layers (prevents what axis direction from compressing Layer), the bending stress retaining layer is the filament of 0 degree of prepreg made by by carrying out heat cure to 0 degree of prepreg Machine direction is parallel to cylinder axis direction.

In addition to carbon fiber, alumina fibre, aramid fibre, Tai Lunnuo (Tyranno) fiber, amorphous fibre Dimension, glass fibre etc. can act as being included in the reinforcing fiber in the middle of various prepreg, and the prepreg includes above-mentioned Torsional rigidity keep prepreg 2, prevent flexing prepreg 3 and prevent burst (the 0 degree of prepreg of prepreg 7 Base).In other words, wire type is not fundamentally limited to particular type.

Keep prepreg 2 (a pair of biasing prepreg 2A and 2B), prevent (hoop) of flexing in such as torsional rigidity In the case that the unidirectional fibre of prepreg 3 or (hoop) prepreg 7 for preventing from bursting strengthens prepreg (that is, carefully The direction of silk fiber arranges in one direction), wire thickness is desirably less than 24K (1K=1,000 filament).If silk thread Thickness then possibly cannot guarantee uniform fabric property more than 24K；Additionally, surrounding heart axle during manufacture to wind prepreg The machinability of base may be deteriorated.

This resin for strengthening fabric dipping can be arbitrary type from for essence.It is, for example possible to use asphalt mixtures modified by epoxy resin Fat, unsaturated polyester resin, phenolic resin, vinyl ester resin, polyether-ether-ketone (peek) resin, polyimide resin etc..

It is desirable that the weight of each prepreg is less than 300g/m², more desirably less than 250g/m².If weight surpasses Cross 300g/m², then prepreg become blocked up, so as to be difficult be wound around heart axle during manufacture.It is included in each pre- Amount of resin in the middle of leaching material base is ideally in the range of 45 20 the percent to percent of weight ratio；It is more preferable Ground is 40 25 the percent to percent of weight ratio.If the weight content of resin is below 20 percent, Then the axle with sufficient intensity possibly cannot be produced due to the too resin of a small amount of.If the weight content of resin exceedes percentage 45, then compared with the cylinder with identical weight, torsional rigidity may deteriorate.

Placing as discussed above the FRP cylinders 100 of configuration can improve intensity relative to torsional direction and buckling direction, This is because simultaneously wound multilayer 10 is manufactured between the multiple FRP layers for being included in the main body including FRP cylinders 100, should Simultaneously wound multilayer 10 is that (it keeps prepreg 2 and anti-anti-bend by the torsional rigidity being laminated mutually by one group of prepreg 1 Bent prepreg 3 is constituted) continuous winding multi-turn and carry out heat cure (wherein torsional rigidity keeps prepreg 2 to include inclining In the fibrage in cylinder axis direction, preventing the prepreg 3 of flexing includes being orthogonal to the fibrage in cylinder axis direction) configuration .FRP cylinders 100 with this structure are adapted for use as the power transmission shaft or drive shaft of automobile.

(that is, a pair of biasing prepreg 2A and 2B and hoop prepreg 3) is grand further, since three prepreg It is laminated and is then wound while is considered as single prepreg base (one group of prepreg 1) in sight, so with The situation that the material of identical weight independently winds is compared, and prevents being presented as flexing effect can be while realizing FRP cylinders 100 The mitigation of weight and the raising of intensity.

Next, the method for manufacture FRP cylinders 100 described below, the FRP cylinders 100 are carried out as described above Configuration.Manufacture method described below is only example；Can enter in the case of without departing from the spirit and scope of the present invention The various changes of row.

(including one group of prepreg 1, each prepreg in one group of prepreg 1 is by soaking for multiple prepreg The carbon fiber of stain thermosetting resin piece is made) around the heart axle (hereinafter referred to as " heart axle ") of shaft-like (column) made by metal material The periphery of M is wound.That is, multiple prepreg are wrapped in around the periphery of heart axle M, with the layer for carrying out multilayer thereon Folded, its lamination order is formed from the prepreg of the most interior FRP layers of FRP cylinders 100 to the outermost FRP for forming FRP cylinders 100 The prepreg of layer.It is desirable that this many layer operations are performed under predetermined pre- Warm status, such that it is able to come around heart axle M Winding prepreg, its canoe causes the prepreg adjoined closely to be laminated mutually.

When completing the winding of all prepreg around heart axle M, by contraction band or its class under tension force It is wrapped in prepreg like thing, and prepreg carries out heat cure by heater (such as baking oven), wherein outside Pressure acts on prepreg.It is desirable that the heating and solidification process are carried out in a vacuum (for example, in the middle of pressure cooker).Cause This, the multiple prepreg being wrapped in around heart axle M are thermally cured all-in-one-piece FRP cylinders.That is, one group of quilt of prepreg 1 Heat cure and become simultaneously wound multilayer 10.

Subsequently, FRP cylinders 100 (Fig. 4) are completed by the way that heart axle M is pulled out, the FRP cylinders 100 have internal diameter φ, outer Footpath Ф and length L, internal diameter φ is corresponding to the external diameter of heart axle M, and external diameter Ф adds the thickness of multiple FRP layers corresponding to internal diameter φ, long Length of the degree L corresponding to prepreg.

According to the method for manufacturing FRP cylinders of the present embodiment, to one group of continuous winding multi-turn (its of prepreg 1 Middle torsional rigidity keeps prepreg 2 to include favouring the fibrage in cylinder axis direction, and prevents the prepreg 3 of flexing Fibrage including cylinder axis direction is orthogonal to) process be included in by multiple prepreg be wound up as cylinder process work as In, one group of prepreg 1 by the torsional rigidity that is laminated mutually keep prepreg 2 (a pair of biasing prepreg 2A and 2B) and The prepreg (hoop prepreg) 3 for preventing flexing is constituted.In other words, the multi-lay winding process that this is carried out simultaneously is will be multiple Prepreg (three prepreg：Torsional rigidity keeps a pair of biasing prepreg 2A and 2B of prepreg 2, and prevents The prepreg 3 of flexing) process of multi-turn is continuously wound around heart axle M, as the plurality of prepreg is single pre- Leaching material base (one group of prepreg 1).

It is desirable that while the multi-lay winding process for carrying out is carried out by multiple separate sheets, these separate sheets are clipped in stacking Between adjacent courses under state (separate sheet winding).Fig. 5 shows this embodiment.In the middle of the embodiment, while entering What capable multi-lay winding process was carried out by separate sheet P1 and separate sheet P2, separate sheet P1 is clipped in torsional rigidity and keeps preimpregnation Material base 2 (torsional rigidity retaining layer 20) and prevent flexing prepreg 3 (preventing the layer 30 of flexing) between, separate sheet P2 folder Bias between prepreg 2A and 2B (a pair of bias layers 20A and 20B) at a pair.Can be used using fluororesin (coating) film Make separate sheet P1 and P2, for example for example, PTFE films or PFA films.

Wound according to above-mentioned separate sheet, one group of prepreg 1 can equably wind；Additionally, greatly improving FRP circles The formability of cylinder 100, and its internal structure and external structure can be made splendid.Therefore, it is not necessary to FRP cylinders 100 surface is polished so that it becomes smooth by post processing, and also surface need not be painted to improve FRP circles The outward appearance on the surface of cylinder 100.(separate sheet is succeedingly removed during the multi-lay winding process that separate sheet P1 and P2 are carried out at the same time Remove process).Process is removed for the ease of the separate sheet, the width of each separate sheet P1 and P2 is set greater than and is longer than The width W of one group of prepreg 10.Additionally, on the position that winding starts, each separate sheet P1 and P2 are slightly recessed one In the middle of group prepreg 1 (simultaneously wound multilayer 10).

(the second embodiment)

Fig. 6 is to show the multilayer 10 wound while being included in FRP cylinders with regard to second embodiment of the invention View.In the middle of the embodiment, torsional rigidity keeps prepreg 2 and prevents the winding start bit of the prepreg 3 of flexing Put be formed it is mutually different, so as to simultaneously wound multilayer 10 torsional rigidity retaining layer 20 and prevent the layer 30 of flexing mutual Skew (skew winding).More specifically, prepreg 2 (a pair of biasing prepreg 2A and 2B) has been kept from torsional stiffnesses Jing is wound for point (winding starting position) place of cylinder, and torsional rigidity keeps prepreg 2 and prevents the prepreg 3 of flexing The circle of ground continuous winding two is stacked mutually.The skew winding can strengthen anti-anti-bend in the outer layer for receiving higher shear stress Bent effect such that it is able to so that FRP cylinders have higher intensity.

Torsional rigidity keeps prepreg 2 and prevents the drift rate between the winding starting position of the prepreg 3 of flexing (side-play amount) can change according to the purposes of FRP cylinders.Additionally, the FRP cylinders of the second embodiment can be with real with first Apply the FRP cylinders similar mode of scheme to be manufactured.

Although torsional rigidity keeps prepreg 2 and prevents the prepreg 3 of flexing to be mutually shifted in figure 6, can So that a pair of biasing prepreg 2A and 2B are mutually shifted.For example, the winding starting position of three below prepreg can be with Be arranged to it is mutually different, that is, a pair of biasing prepreg 2A and 2B and prevent the prepreg 3 of flexing.Additionally, this three The stacking order of individual prepreg is not restricted to as shown in Fig. 6；For example, can cause to prevent flexing prepreg and A pair of biasing prepreg are laminated with the order started from internal layer side.

(the 3rd embodiment)

Fig. 7 is to show the multilayer 10 wound while being included in FRP cylinders with regard to third embodiment of the invention View.The FRP cylinders of the embodiment have two simultaneously wound multilayers 10 and 40, and it is respectively by two groups of prepreg 1 and 4 It is fabricated by.One group of prepreg 4 has the identical structure of one group of prepreg 1 with the first embodiment, and this group Prepreg 4 is by the way that the torsional rigidity being made up of a pair of biasing prepreg 5A and 5B is kept into prepreg 5 and anti-anti-bend Bent (hoop) prepreg 6 mutually stacking and made by (Fig. 8).By each of the multilayer 10 and 40 simultaneously wound to two groups Person's continuous winding three is enclosed, and the total number of lamination is changed into 18.

Include two simultaneously wound multilayers 10 and 40, energy in multiple FRP layers of FRP cylinders by causing FRP cylinders The enough intensity for further increasing FRP cylinders.Can suitably be changed according to the purposes of FRP cylinders and be included in FRP cylinders The quantity of the multilayer wound while in multiple FRP layers, for example, FRP cylinders can be manufactured into the multiple FRP in FRP cylinders Layer includes three or more simultaneously wound multilayers.In this case, used corresponding to simultaneously wound multilayer Multigroup prepreg of quantity.

Although the FRP cylinders of the present embodiment can be carried out in the way of the FRP cylinders similar to the first embodiment Manufacture, but it is desirable that the multi-lay winding process carried out while for one group of prepreg 1 and for one group of prepreg 4 While the multi-lay winding process that carries out (rightabout) alternately on mutually opposite winding direction.It is shown in the figure 7 Example in the middle of, when one group of prepreg 1 in the clockwise direction (for Fig. 7 from left to right) rotation heart axle M around After winding, one group of prepreg 4 is carried out around the heart axle M of rotation in the counterclockwise direction (for Fig. 7 from right to left) Winding.This enhances in a circumferential direction the uniformity of the FRP layers of FRP cylinders, and enhances the intensity of FRP cylinders and its outer See.

(the 4th embodiment)

Fig. 9 is to show the multilayer 70 wound while being included in FRP cylinders with regard to four embodiment of the invention View.Represented by identical reference number with element as the element class of the first embodiment, and it is right by omitting The description of these elements.

In addition to torsional rigidity retaining layer 20 with the layer 30 for preventing flexing, it is firm that simultaneously wound multilayer 70 has been additionally provided with bending Degree retaining layer 80, the intensity that the bending stiffness retaining layer 80 has can undergo to be applied on parallel to cylinder axis direction Power (moment of flexure) on FRP cylinders.

That is, simultaneously wound multilayer 70 is formed by one group of configuration of prepreg 1 ', and one group of prepreg 1 ' is by such as scheming The bending stiffness for starting sequentially to be laminated from bottom (inner side) as shown in 10 keeps prepreg 9, torsional rigidity to keep preimpregnation Material base 2 and prevent the prepreg 3 of flexing to constitute, and one group of prepreg 1 ' by continuous winding multi-turn and by thermosetting Change, wherein the bending stiffness keeps prepreg 9 to include the fibrage parallel to cylinder axis direction, the torsional rigidity keeps pre- Leaching material base 2 includes favouring the fibrage in cylinder axis direction, and this prevents the prepreg 3 of flexing from including being orthogonal to cylinder The fibrage of axis direction.Bending stiffness keeps prepreg 9 to become bending stiffness retaining layer 80 by heat cure；At this In the middle of embodiment, it is 0 degree of prepreg that bending stiffness keeps prepreg 9, and its filament fiber is oriented parallel to cylinder axis Direction.Figure 10 shows that the bending stiffness for constituting one group of prepreg 1 ' keeps prepreg 9, torsional rigidity to keep prepreg 2 and prevent flexing prepreg 3 it is stacked together before state, so as to show each of these prepreg 9,2 and 3 The filament fiber direction of person.

(bending stiffness keeps prepreg 9, torsional rigidity to keep prepreg 2 and prevent to the width W of one group of prepreg 1 ' The bent prepreg 3 of anti-bend) it is configured to when these prepreg are wound up as cylinder approx slightly larger than these preimpregnation Three times of the girth of material base, so as to one group of prepreg 1 ' can continuous winding three enclose and be wound up as cylinder.Due to one group of preimpregnation Material base 1 ' is made up of following four prepreg：Bending stiffness keep prepreg 9, a pair of biasing prepreg 2A and 2B and Hoop prepreg 3, therefore, by the way that one group of continuous winding of prepreg 1 ' three is enclosed, then the quantity of lamination is changed into 12 altogether.

Continuous winding is not limited to three circles for the number of turns of one group of prepreg 1 ' of cylinder, and can suitably carry out Change.For example, as shown in figure 11, cylinder is wound up as by the way that one group of continuous winding of prepreg 1 ' five is enclosed, then the number of lamination Amount is changed into 20 altogether.

According to the FRP circles that the multilayer 70 for winding while configure as mentioned above is provided with multiple FRP layers of FRP cylinders Cylinder, the FRP cylinders are obtained in that relative to the intensity of bending direction and relative to torsional direction and the intensity of buckling direction.Tool The FRP cylinders 100 for having these characteristics are suitable as the stabiliser bar or anti-roll lever of automobile.

The multilayer 70 wound while the present embodiment can also be with the mode system similar with the first embodiment Make.Furthermore, it is possible to arrange two or more simultaneously wound multilayers 70；In this case, it is desirable that these prepreg Group 1 ' alternately winds on mutually opposite winding direction.

(the 5th embodiment)

Figure 12 is to show the multilayer 90 wound while being included in FRP cylinders with regard to fifth embodiment of the invention View.Simultaneously wound multilayer 90 is provided with the first bias layer 20A, bending stiffness retaining layer 80, the second bias layer 20B and anti-anti-bend Bent layer 30, the intensity that first bias layer 20A has can undergo to be applied on the direction for favouring cylinder axis direction Power (moment of torsion) on FRP cylinders；The intensity that the bending stiffness retaining layer 80 has can undergo parallel to cylinder axis side To direction on be applied to power (moment of flexure) on FRP cylinders；The intensity that second bias layer 20B has can undergo favouring circle The power (moment of torsion) being applied on the direction of cylinder axis direction on FRP cylinders；The intensity that the layer 30 for preventing flexing has can Undergo be orthogonal on the direction in cylinder axis direction the power (flexing) that is applied on FRP cylinders.

More specifically, simultaneously wound multilayer 90 is by one group of prepreg 1 " configuration form, one group of prepreg 1 " by as shown in Figure 13 from bottom (inner side) be sequentially laminated biasing prepreg 2A, bending stiffness keep preimpregnation Material base 9, biasing and prevent the prepreg 3 of flexing to constitute at prepreg 2B, and one group of prepreg 1 " by continuous winding Multi-turn is simultaneously thermally cured, wherein the filament fiber direction of biasing prepreg 2A is with the angles of+45 degree and cylinder axis directions Incline, bending stiffness keeps prepreg 9 to include the fibrage parallel to cylinder axis direction, biases the filament of prepreg 2B Machine direction is inclined with the angle of -45 degree and cylinder axis direction, and this prevents the prepreg 3 of flexing from including being orthogonal to circle The fibrage of cylinder axis direction.Figure 13 shows that biasing prepreg 2A, bending stiffness keep prepreg 9, biasing prepreg State before base 2B is stacked together with the prepreg 3 for preventing flexing, so as to show one group of prepreg 1 is constituted " These prepreg 2A, 9, the filament fiber direction of each of 2B and 3.

(biasing prepreg 2A, bending stiffness keep prepreg 9, biasing prepreg to the width W of one group of prepreg 1 " Base 2B and the prepreg 3 for preventing flexing) it is configured to approx be more than this when these prepreg are wound up as cylinder Three times of the girth of a little prepreg, also, by by one group of prepreg 1 " continuous winding five is enclosed, then the quantity of lamination is altogether It is changed into 20.

According to the FRP circles that the multilayer 90 for winding while configure as mentioned above is provided with multiple FRP layers of FRP cylinders Cylinder, (biasing prepreg 2A and bending stiffness keep prepreg 9, bending stiffness to keep the and of prepreg 9 to adjoin prepreg Biasing prepreg 2B and biasing prepreg 2B and prevent the prepreg 3 of flexing) between angle difference be all 45 Degree, which reduces distortion deviation between layers, such that it is able to prevent stripping/peeling between layers.

The multilayer 90 wound while the present embodiment can also be with the mode system similar with the first embodiment Make.Furthermore, it is possible to arrange two or more simultaneously wound multilayers 90；In this case, it is desirable that these prepreg Group 1 " alternately winds on mutually opposite winding direction.

(the 6th embodiment)

Figure 14 is to show regarding for the multilayer wound while being included in FRP cylinders with regard to sixth embodiment of the invention Figure.The FRP cylinders of the embodiment have two simultaneously wound multilayers 95 and 96, they respectively by two groups of prepreg 1X and 1Y configurations are formed.

As shown in figure 15, simultaneously wound multilayer 95 is formed by one group of prepreg 1X configuration, one group of prepreg 1X by as shown in Figure 15 from bottom (inner side) be sequentially laminated prevent flexing prepreg 3, biasing prepreg Base 2A, bending stiffness keep prepreg 9 and biasing prepreg 2B to constitute, and one group of prepreg 1X continuous winding is more Enclose and be thermally cured, wherein prevent the prepreg 3 of flexing to include being orthogonal to the fibrage in cylinder axis direction, bias prepreg The filament fiber direction of base 2A favours cylinder axis direction with the angle of+45 degree, and it is flat that bending stiffness keeps prepreg 9 to have Row favours cylinder in the fibrage in cylinder axis direction, the filament fiber direction for biasing prepreg 2B with the angle of -45 degree Axis direction.On the other hand, simultaneously wound multilayer 96 is formed by one group of prepreg 1Y configuration, one group of prepreg 1Y Biasing prepreg 2B, bending stiffness holding prepreg 9, the biasing prepreg being sequentially laminated by from bottom (inner side) 2A and prevent the prepreg 3 of flexing to constitute, and one group of prepreg 1Y continuous winding multi-turn and be thermally cured.That is, From lower floor (inner side) towards the stepped construction of one group of prepreg 1X (simultaneously wound multilayer 95) in upper strata (outside) and from upper strata (outside) is mutually the same towards one group of prepreg 1Y (simultaneously wound multilayer 96) of lower floor (inner side).

It is as shown in figure 16 by the plain weave impregnated of thermosetting resin piece in the middle of each embodiment of the embodiment above Plain weave fabric made by fabric (biaxial braid fabric) prepreg 2C not can serve as torsional rigidity and keep prepreg 2, and not As a pair of biasing prepreg 2A and 2B.In the middle of the embodiment, plain weave fabric prepreg 2C is set, with So that a pair of fiber yarn 2C-1 and 2C-2 are symmetrically handed over relative to cylinder axis direction with symmetry angle (for example, ± 45 degree) Fork.

Additionally, the three axle braided fabrics by made by the three axle braided fabrics impregnated of thermosetting resin piece as shown in figure 17 are pre- Leaching material base 2D can serve as torsional rigidity and keep prepreg 2.In the middle of the embodiment, to three axle braided fabric prepreg 2D is set so that weft yarn 2D-1 is parallel to cylinder axis direction, and cause a pair of warp thread 2D-2 and 2D-3 relative to Cylinder axis direction is symmetrically intersected with symmetry angle (for example, ± 60 degree).On the other hand, as shown in figure 18, can also be to three Axle braided fabric prepreg 2D is configured, so that weft yarn 2D-1 is orthogonal to cylinder axis direction, and causes a pair of warp thread 2D-2 and 2D-3 is symmetrically intersected relative to cylinder axis direction with symmetry angle (for example, ± 30 degree).

Additionally, the four axle braided fabrics by made by the four axle braided fabrics impregnated of thermosetting resin piece as shown in figure 19 are pre- Leaching material base 2E can serve as torsional rigidity and keep prepreg 2.In the middle of the embodiment, to four axle braided fabric prepreg 2E is set, so that horizontal yarns 2E-1 are parallel to cylinder axis direction, so as to vertical yarn 2E-2 is orthogonal to Cylindorical rod Line direction, and a pair of angled yarn 2E-3 and 2E-4 is symmetrical with symmetry angle (such as ± 45 degree) relative to cylinder axis direction Ground intersects.

It is noted that (the twin shaft volume of the plain weave fabric by made by the plain weave fabric impregnated of thermosetting resin piece as shown in figure 20 Woven fabric) prepreg 8 can serve as preventing the prepreg 3 of flexing, rather than as hoop prepreg.To plain weave fabric Prepreg 8 is set so that a pair of fiber yarn 8A and 8B with symmetry angle (0 degree with 90 degree) parallel (orthogonal) in circle Cylinder axis direction.Additionally, four axle braided fabric prepreg 2E as shown in figure 19 can also be used as preventing the preimpregnation of flexing Material base 3.

In the case of the reinforcing fiber prepreg with textile structural, the textile structural is, for example, mentioned above Plain weave fabric prepreg 2C, three axle braided fabric prepreg 2D, four axle braided fabric prepreg 2E or plain weave fabric Prepreg 8, then wire thickness be desirably less than 6K.If wire thickness becomes too much more than 6K, the thickness of prepreg, And possibly cannot guarantee uniform fabric property (physical property)；Additionally, during manufacture around the winding prepreg of heart axle The machinability of base may deteriorate.

Practical example

(the first practical example)

In the middle of the first practical example, the present inventor creates the prototype of the FRP cylinders of four types：Type A To D, FRP cylinders of the invention are compared with the FRP cylinders with traditional structure.Figure 21 is for showing each The view of the multi-lay winding structure of the FRP cylinders of type, and in figure 21, each Regional Representative one surrounded by thick frame FRP layers.

The FRP cylinders of the structure for each corresponding to that there is the 3rd embodiment of type A and B；In the middle of type A, lead to Cross at the same the multi-lay winding that carries out and multiple separate sheets are clipped in the middle, and in the middle of type B, without separate sheet by entering simultaneously Capable multi-lay winding and be caught in the middle.The each of type A and B has two simultaneously wound multilayers, and they are by two-layer Prepreg is assembled to put and formed, and every group of prepreg is pre- by a pair of biasings being sequentially laminated towards outermost layer side from innermost layer side (90 degree) of leaching material base (± 45 degree) and hoop prepreg are constituted, and every group of prepreg continuous winding three is enclosed (nine laminations) And be thermally cured (18 laminations altogether).In figure 21, this two groups of prepreg are shown as shadow region.Internal diameter φ is 33.5mm, external diameter Φ are 38.7mm, and length L is 330.2mm, and the weight of Manufactured FRP cylinders is about 150g.

The FRP cylinders with traditional basic structure that each correspond to of Type C and D (are not while the multilayer for carrying out Winding type).Type C has three layers of group being alternately arranged, per group by being laminated towards outermost layer side from innermost layer side FRP layers and another FRP layer are constituted, wherein a pair of biasings that previous FRP layers are only wound up as cylinder by the circle of winding two are pre- Leaching material base (± 45 degree) is made (four laminations), and wherein latter FRP layer is only wound up as cylinder by the circle of winding two Ring prepreg (90 degree) is made (two laminations) (18 laminations altogether).Type D has from innermost layer side towards most The FRP layers and the FRP layers of two Second Types of two first kind of outside side stacking, the wherein FRP of each first kind A pair of biasings prepreg (± 45 degree) that layer is only wound up as cylinder by the circle of winding three make (six laminations), and wherein The FRP layers of each Second Type are only wound up as the hoop prepreg (90 degree) of cylinder by the circle of winding three and make that (three folded Layer) (18 laminations altogether).

The present inventor has carried out moment of torsion destructive test in the prototype of A to the D types of FRP cylinders, and Confirm that the FRP cylinders (type A and B) manufactured according to the present invention have superiority in torsional strength.For each type of FRP cylinders perform moment of torsion destructive test twice.

The executive mode of moment of torsion destructive test will be discussed below.Each test block is loaded onto hydraulic torque fracture In the middle of test equipment, one end is securely locked, by the sine wave with ± 45 degree of amplitudes under 0.02Hz speed come to Give other end angular displacement.Torsional strength is measured by the moment of torsion detector installed in secure lock end.By being fixed to displacement The decoder of the axle on end is measuring torsion angle.

Table 1 below shows the moment of torsion destructive test result of the prototype of A to the D types of FRP cylinders.Type A and B are roots Configured according to the present invention, the type A and B have the torsional strength higher than traditional type C and D, and mean height reaches 100Nm, this demonstrate that the superiority of the multi-lay winding carried out while the present invention.When type A mutually compares with type B Wait, type A has the torsional strength higher than type B, mean height reaches 180Nm, this demonstrate that the superiority that separate sheet winds.

Table 1

Additionally, when type A mutually compares with type B, the surface configuration of type A than type B surface configuration more It is smooth, and from the point of view of the outward appearance of type A and B, it is obvious that the formability between them has differences.Additionally, from polishing In the internal state of type A afterwards and the comparison of the internal state of type B type A is can be seen that with more uniform than type B Internal structure, which demonstrate separate sheet winding superiority.

(the second practical example)

In the middle of the second practical example, the present inventor creates the prototype of the FRP cylinders of three types：Type E, F and G.Figure 22 is the view for showing the multi-lay winding structure of the FRP cylinders of each type, and in fig. 22, by thick side One FRP layer of each Regional Representative that frame is surrounded.

Type E corresponding to the structure with the 4th embodiment FRP cylinders (Figure 11), and with simultaneously wound many Layer, it is formed by the configuration of one group of prepreg, and one group of prepreg towards outermost layer side from innermost layer side by being sequentially laminated 0 degree of prepreg, (90 degree) of a pair of biasings prepreg (± 45 degree) and hoop prepreg constitute, and one group of preimpregnation Material base continuous winding five is enclosed and is thermally cured (20 laminations altogether).

Type F corresponding to the structure with the 5th embodiment FRP cylinders (Figure 13), and with simultaneously wound many Layer, it is formed by the configuration of one group of prepreg, and one group of prepreg towards outermost layer side from innermost layer side by being sequentially laminated Biasing prepreg (+45 degree), 0 degree prepreg, biasing prepreg (- 45 spend) and hoop prepreg (90 degree) structure Into, and one group of prepreg continuous winding five encloses and is thermally cured (20 laminations altogether).

Type G is corresponding to the FPR cylinders (being not the multi-lay winding type while carrying out) with traditional basic structure. Type G be by 0 degree of prepreg two laminations, a pair of biasing prepreg (± 45 degree) two laminations (four laminations), Two laminations of hoop prepreg (90 degree), three laminations of 0 degree of prepreg, a pair of biasings prepreg (± 45 degree) Three laminations (20 laminations altogether) of three laminations (six laminations) and hoop prepreg (90 degree) are constituted.

The present inventor has carried out moment of torsion destructive test for the FRP cylinders prototype of type E, F and G, and Confirm that the FRP cylinders (type E and F) produced according to the present invention have superiority in torsional strength and torsional rigidity. The torsional fracture test is performed in the way of similar to the first practical example.

Table 2 below shows the moment of torsion destructive test result of the prototype of E, F and G type of FRP cylinders.It is traditional with having Type G of structure compares, type E configured according to the present invention present be higher by 90Nm higher torsional strength and It is higher by 20Nm²Higher torsional rigidity.Although the intensity that type E and G are calculated according to CLT (Classical lamination theory) is mutual It is mutually identical, but type E shows the torsional rigidity of higher torsional strength and Geng Gao than type G, so as to confirm while entering The superiority of capable multi-lay winding.Additionally, the type F ratio configured according to the present invention has the torsion of type G of traditional structure Rigidity will low 10Nm²；However, type F presents the higher torsional strength that 120Nm is higher by than type G.

Table 2

(the 3rd practical example)

In the middle of the 3rd practical example, the present inventor creates the prototype of two kinds of FRP cylinders：Type H and I.Figure 23 is the view for showing the multi-lay winding structure of the FRP cylinders of each type, and in fig 23, by thick side One FRP layer of each Regional Representative that frame is surrounded.

Type H corresponding to the structure with the 4th embodiment FRP cylinders (Fig. 9), and with simultaneously wound many Layer, it is formed by the configuration of one group of prepreg, and one group of prepreg towards outermost layer side from innermost layer side by being sequentially laminated 0 degree of prepreg, (90 degree) of a pair of biasings prepreg (± 45 degree) and hoop prepreg constitute, and one group of preimpregnation Material base continuous winding three is enclosed and is thermally cured (12 laminations altogether).

Type I is corresponding to the FPR cylinders (being not the multi-lay winding type while carrying out) with traditional basic structure. Type I be by 0 degree of prepreg three laminations, a pair of biasing prepreg (± 45 degree) three laminations (six laminations) and Three laminations (12 laminations altogether) of hoop prepreg (90 degree) are constituted.

The present inventor has carried out bend fracture test, and channel syndrome for the FRP cylinders prototype of type H and I The real FRP cylinders (type H) produced according to the present invention have superiority in bending strength and bending stiffness.

Destructive test is curved using the tensioning and compression general purpose test equipment that are equipped with 4 crooked test fixtures, Its test mode will be discussed below.The cylinder test block of 700mm length is manufactured, and bending has been performed on the cylinder test block Destructive test, its loading velocity is 5mm per minute, and the distance between the strong point is 600mm, and the distance of interaction load(ing) point is 200mm.Length is loaded into the immediately below of each strong point for the metal core wire of 20mm, its object is to prevent cross-sectional deformation. Strain gauge is arranged on test block, and the bending strength and bending stiffness of the test block is from the dynamometry for being installed on crosshead What the measured torsional deformation of sensor determined with load.

Table 3 below shows the bend fracture result of the test of type H of FRP cylinders and I prototypes.With with traditional structure Type I compare, present to be higher by according to type H of present invention configuration and the higher bending strength of 3.55kNm and be higher by 0.77KNm²Higher bending stiffness.Have been proven that by this way, include that bending is firm by causing one group of prepreg It is strong that degree keeps prepreg (including that bending stiffness keeps prepreg by causing simultaneously wound multilayer) to also improve bending Degree and bending stiffness.

Table 3

Prototype	The measured value (kNm) of bending strength	Measured value (the KNm of bending stiffness²)
			Type H	11.14	3.44
Type I	7.59	2.67

Industrial applicability

FRP cylinders of the invention can be widely applied for various industrial circles, for example, for the power transmission shaft of vehicle, Drive shaft, stabiliser bar or anti-roll lever.

The description of reference

1st, 1 ', 1 ", 1X, 1Y, 4 one groups of prepreg

2nd, 5 torsional rigidities keep prepreg

A pair of biasing prepreg of 2A, 2B, 5A, 5B

2C is used as the plain weave fabric prepreg that torsional rigidity keeps prepreg

2D is used as the three axle braided fabric prepreg that torsional rigidity keeps prepreg

2E is used as four axles that torsional rigidity keeps prepreg or prevents the prepreg of flexing Braided fabric prepreg

3rd, 6 the prepreg of flexing is prevented

7 prepreg for preventing explosion

The 8 plain weave fabric prepreg as the prepreg for preventing flexing

9 are used as 0 degree of prepreg that bending stiffness keeps prepreg

10th, 40,70,90,95,96 simultaneously wound multilayer

20th, 50 torsional rigidity retaining layer

A pair of bias layers of 20A, 20B, 50A, 50B

30th, 60 the layer that bursts is prevented

80 bending stiffness retaining layers

100 FRP cylinders

Shaft-like (column) heart axles of M

P1, P2 separate sheet

Claims

1. a kind of method of manufacture FRP cylinders, wherein multiple prepreg are wound up as into cylinder and heat cure is carried out, it is many to be formed Individual FRP layers, by the way that reinforcing fiber is formed impregnated of thermosetting resin piece, methods described includes the prepreg：

The multi-lay winding process for carrying out simultaneously, wherein when the plurality of prepreg is wound up as cylinder, torsional rigidity is protected Hold prepreg and prevent the prepreg of flexing to be continuously wound multi-turn while stacking mutually, wherein the torsion Rigidity keeps prepreg including the fibrage in the cylinder axis direction for favouring the FRP cylinders, and wherein, it is described to prevent The prepreg of flexing includes being orthogonal to the fibrage in the cylinder axis direction,

It is wherein described while the multi-lay winding process that carries out is performed at least twice, and

To described while the multi-lay winding process for carrying out is performed at least twice wherein on winding direction contrary mutually.

2. the method for manufacture FRP cylinders according to claim 1, wherein, described while the multi-lay winding process for carrying out In, the torsional rigidity keeps prepreg and the prepreg for preventing flexing by bending stiffness holding prepreg Multi-turn is continuously wound, the bending stiffness keeps prepreg to include the fibrage parallel to the cylinder axis direction, And the bending stiffness keeps prepreg to be further layered in the torsional rigidity keeping prepreg and the flexing that prevents In prepreg.

3. the method for manufacture FRP cylinders according to claim 1, wherein described while during the multi-lay winding for carrying out Each in the plurality of prepreg being wound has identical length on the cylinder axis direction, and Wherein, on the cylinder axis direction, the plurality of prepreg is stacked mutually in the whole length of the FRP cylinders.

4. a kind of FRP cylinders, with multiple prepreg, the prepreg by by reinforcing fiber impregnated of thermosetting resin piece And formed, and the prepreg is wound up as cylinder and has carried out heat cure, to be formed as multiple FRP layers,

Wherein the plurality of FRP layers include simultaneously wound multilayer, and the multilayer is formed by one group of prepreg configuration, and this group pre- Leaching material base continuous winding multi-turn is simultaneously thermally cured, wherein one group of prepreg includes that the torsional rigidity of stacking mutually keeps pre- Leaching material base and the prepreg for preventing flexing, wherein the torsional rigidity keeps prepreg to include favouring the FRP cylinders Cylinder axis direction fibrage, and the wherein described prepreg for preventing flexing includes being orthogonal to the cylinder axis side To fibrage,

Wherein the plurality of FRP layers include multilayer simultaneously wound described at least two, and

At least two groups prepreg for wherein forming the simultaneously wound multilayer respectively are handed over winding direction contrary mutually For winding.

5. FRP cylinders according to claim 4, wherein the torsional rigidity keeps prepreg to include a pair of biasing preimpregnation Material base, the filament fiber direction of the biasing prepreg is with ± α degree (0<α<90) angle and favour the cylinder axis side To, and

Wherein described to prevent the prepreg of flexing from including hoop prepreg, the filament fiber direction of the hoop prepreg is just Meet at the cylinder axis direction.

6. FRP cylinders according to claim 5, wherein the filament fiber direction of the pair of biasing prepreg with ± 30 degree, ± 45 degree or ± 60 degree of angle favours the cylinder axis direction.

7. FRP cylinders according to claim 4, wherein one group of prepreg also includes being layered in the torsional rigidity The bending stiffness in prepreg and the prepreg for preventing flexing is kept to keep prepreg, the bending stiffness to keep Prepreg has the fibrage parallel to the cylinder axis direction.

8. FRP cylinders according to claim 7, wherein the bending stiffness keeps prepreg to include 0 degree of prepreg, The filament fiber of 0 degree of prepreg is oriented parallel to the cylinder axis direction.

9. FRP cylinders according to claim 4, wherein the torsional rigidity keeps prepreg to include plain weave fabric preimpregnation Material base, three axle braided fabric prepreg or four axle braided fabric prepreg,

Wherein described plain weave fabric prepreg is made up of the plain weave fabric impregnated of thermosetting resin piece, and the plain weave fabric is pre- Leaching material base includes favouring the fibrage in the cylinder axis direction, wherein the three axles braided fabric prepreg by impregnated of Three axle braided fabrics of thermosetting resin piece are constituted, and the three axles braided fabric prepreg includes favouring the cylinder axis side To fibrage, and wherein described four axles braided fabric prepreg is by the four axle braided fabric structures impregnated of thermosetting resin piece Into, and the four axles braided fabric prepreg is including the fibrage for favouring the cylinder axis direction.

10. FRP cylinders according to claim 4, wherein described prevent the prepreg of flexing from presoaking including plain weave fabric Material base or four axle braided fabric prepreg,

Wherein described plain weave fabric prepreg is made up of the plain weave fabric impregnated of thermosetting resin piece, and the plain weave fabric is pre- Leaching material base includes being orthogonal to the fibrage in the cylinder axis direction, and wherein described four axles braided fabric prepreg is by soaking Four axle braided fabrics of stain thermosetting resin piece are constituted, and the four axles braided fabric prepreg includes being orthogonal to the Cylindorical rod The fibrage in line direction.

11. FRP cylinders according to claim 4, wherein one group of prepreg continuous winding three enclose or more multi-turn and It is wound up as cylinder.

12. FRP cylinders according to claim 4, wherein the plurality of FRP layers include preventing explosion layer to be used as the FRP The outermost layer of layer, this prevents explosion layer from being made up of hoop prepreg, and the filament fiber direction of the hoop prepreg is orthogonal to The cylinder axis direction.

13. FRP cylinders according to claim 4, wherein each prepreg of one group of prepreg is in the circle There is identical length on cylinder axis direction, and wherein on the cylinder axis direction, the institute of one group of prepreg State multiple prepreg to be stacked mutually in the whole length of the FRP cylinders.